CN105814910B - Multilayer stack with high internal damping - Google Patents
Multilayer stack with high internal damping Download PDFInfo
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- CN105814910B CN105814910B CN201480067630.9A CN201480067630A CN105814910B CN 105814910 B CN105814910 B CN 105814910B CN 201480067630 A CN201480067630 A CN 201480067630A CN 105814910 B CN105814910 B CN 105814910B
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- diaphragm
- manufacturing
- electroacoustic transducer
- combination part
- multiple layer
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/04—Plane diaphragms
- H04R7/06—Plane diaphragms comprising a plurality of sections or layers
- H04R7/10—Plane diaphragms comprising a plurality of sections or layers comprising superposed layers in contact
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/06—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer characterised by a fibrous or filamentary layer mechanically connected, e.g. by needling to another layer, e.g. of fibres, of paper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
- H04R31/003—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor for diaphragms or their outer suspension
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
- H04R2307/025—Diaphragms comprising polymeric materials
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Manufacturing & Machinery (AREA)
- Laminated Bodies (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
The invention relates to a multilayer composite for producing a membrane for an electroacoustic transducer, comprising a first and a second cover layer, a first and a second damping layer and an isolation layer, the first and the second damping layer consisting of adhesive compositions whose respective glass transition temperatures TG (DSC) differ by at least 10K.
Description
The present invention relates to the multiple layer combination parts with high interior damping of the diaphragm for manufacturing electroacoustic transducer.
In mobile phone and smart phone, for reproducing speech, the tinkle of bells, music etc., sound is by small electroacoustic transducer
(referred to as Microspeaker (micro-loudspeakers)) generates.The size of diaphragm is typical in such Microspeaker
Ground is in 20mm2To 900mm2In the range of, the Microspeaker be also used to headphone, laptop, LCD TV or
In personal digital assistant (PDA).
Due to the desired design requirement of corresponding electronic equipment, Microspeaker is just constantly becoming smaller and more flat, but simultaneously
Also with the operating of higher power, it is meant that constantly increased for Microspeaker and especially for the temperature load of its diaphragm.
Therefore the diaphragm must be by with the long-life and not broken material at high temperature and under serious mechanical load
Material manufacture.However, simultaneously, the diaphragm material should also have good acoustic properties, to assign loudspeaker high sound product
Matter.
Usually requiring that for the material of speaker diaphragm is, firstly, high rigidity and low-density, to generate high acoustic pressure and covering
Wide frequency range.In addition, the material should have high interior damping simultaneously, to ensure smooth frequency response and will be distorted
It minimizes.Because rigidity, light weight and the property of good damping lead to structuring contradiction, and can not be all full simultaneously
Foot (rigidity is bigger, and damping is lower, and vice versa), so the rigidity about diaphragm material typically required for any diaphragm
Reach compromise, or combination rigid material and the material with good damping quality with damping.Thus 7,726,441 B of US is retouched
State the diaphragm being made of the multiple layer combination part of two rigid polymer films and the adhesive damping layer between these films.Explanation
Each five layers of sub-assembly of self-described of 8,141,676 B of book DE 10 2,007 030 665 A and US, two of them outer layer and middle layer
It is separated respectively by thermoplastic adhesive or acrylic tackifier.In this Multilayer Film, by same thickness
Identical adhesive is used for each of described two gluing oxidant layer.The reason is that the diaphragm in loudspeaker should be with maximum right
Title property and homogeneity vibration, and asymmetric structure related with adhesive damping layer can be easy to cause distortion, and this raises weakening
The quality of sound device.In addition, the acoustic properties of loudspeaker can be heavily dependent on special side, used by the special side
The diaphragm of asymmetric structure be fixed in coil.Therefore symmetrical diaphragm becomes to establish the use in loudspeaker, to prevent
The only quality deviation as the result of diaphragm installed incorrectly.
It is an object of the present invention to provide diaphragms, manufacture loudspeaker, especially Microspeaker are particularly used for, at it
Damping property in terms of be advanced optimize and its still there is good rigidity.
The target can be realized by the diaphragm of type described in claim.Show according to the present invention, compared to
The interior damping of the Multilayer Film of layer including identical adhesive, by the internal resistance for the Multilayer Film that the layer of different adhesive constructs
Buddhist nun can to improve, and result include the loudspeaker of such diaphragm acoustic quality it is enhanced.However, for desired property
For matter overview, between adhesive separate interlayer be necessary, even if when these adhesive it is unmixing each other and simply because
The reason and when taking the form of two individual layers.
Present invention is accordingly directed to multiple layer combination parts, are particularly used for the diaphragm of manufacture electroacoustic transducer, the multiple layer combination
Part is characterized in that described first and second including the first and second outer layers, the first and second damping layers and every (parting) layer
Adhesive of the damping layer by its glass transition temperature at a distance of at least 10K, preferably 20K forms.
Multiple layer combination part is to be used to confirm following term herein: the material of material, more particularly two-dimentional degree, by
One multiple layers of composition being arranged on top of the other.Different layers in sub-assembly can be for example coextruded by technology, be coated,
Or it is laminated or is bonded to each other by the combination of these technologies.Multilayer Film is to be used to indicate following term: film herein
Piece is particularly used for loudspeaker, wherein the diaphragm is to pass through hot forming, punching, deep-draw or other moldings by multiple layer combination part
Technology manufacture.
In addition to rigidity, evaluation loud-speaker diaphragm sheet material quality in be considered as key variables be material internal resistance
Buddhist nun η.Interior damping can be calculated by the vibration behavior of material, and represent the measurement of the acoustic quality of material.The damping of material is higher,
Its acoustic quality is better.
Starting point of the invention is attempt to improve and be made of polyether-ether-ketone (PEEK) film, the layer of adhesive and the 2nd PEEK film
Three layers of sub-assembly interior damping, wherein the adhesive layer be arranged between two PEEK films.PEEK is used as this
The membrane material of three layers of sub-assembly is advantageous, because PEEK film shows very high temperature stability and service life.Therefore they
The application such as speaker diaphragm is usually used for either individually or as a part of multiple layer combination part.
In view of in by this sub-assembly that constitutes of layer of the outer membrane of rigidity and soft adhesive, interior damping mainly by
The centre of sub-assembly adhesive layer influence, so purpose be it is clear in first experiment whether can be by using one
The layer (rather than layer of the adhesive of a centre) of two different adhesive on top of the other realizes damping side inside
Any raising in face, the layer of described two different adhesive are different in terms of their damping property.This can be by using tool
There is the adhesive of different glass transition temperature to realize.Therefore the adhesive middle layer that thickness d is given in three layers of sub-assembly is answered
The layer that the adhesive of the half d/2 of thickness is respectively by two is substituted, thus does not generate variation in the overall thickness of middle layer.
Two kinds of mutual exclusive adhesive are selected for this method, these are adhesive unmixing each other, so that both gluings
Agent is present in sub-assembly alternating with each otherly and their own damping property is presented independently of one another.Alternatively, may be used
There are the mixing of two kinds of adhesive, as a result, adhesive mixture macroscopically behaves like new adhesive.For this reason,
By two kinds it is incompatible, unmixing adhesive is applied to the PEEK film of 8 μ m-thicks each independently each other.Then by applying pressure
Two films are stacked on one another by power, wherein adhesive coating side be directed toward each other, therefore one, the layer of two adhesive be located at it is another
It is usually coated on two sides on a and with PEEK film.
Show in this experiment, compared to wherein in every case using only a kind of equal thickness of two kinds of adhesive
The interior damping of this sub-assembly of three layers of sub-assembly, two PEEK films and two kinds of mutual exclusive adhesive can be almost without being changed
It is kind.
However, very surprisingly, other film layer is inserted between the layer of two adhesive to be caused in sub-assembly
Damping significantly improves.In this regard this is surprising, because the layer in two identical adhesive is pointed out in control experiment
Between simply insert other film layer actually internally damping have unfavorable effect.It is somebody's turn to do with what the layer of identical adhesive was observed
The reason of effect, may is that the raising of the rigidity of such sub-assembly, therefore this is also foreseeable.
On the contrary, the effect observed according to the present invention, i.e., with two different adhesive and other film layer
Interior damping is increased sharply in the case where five layers of sub-assembly, cannot based on the simple isolation of two kinds of adhesive, because of the glue used
A possibility that stick is incompatible from starting just to be selected as, itself eliminates mixing.The effect can not be based purely on separately
The insertion of outer interlayer, because this reduces interior damping in the case where two kinds of identical adhesive.Therefore, the following fact has been
Complete unpredictalbe: the specific combination of two kinds of unmixing adhesive and interlayer therebetween obtains the interior damping of such sub-assembly
Significantly improve.
Show according to the present invention, even if when two kinds of adhesive being separated by other layer although mix in principle
It is molten but when being of virtually different glass transition temperatures, also observe that significantly improving for damping.
Glass transition temperature is measured according to DIN 53765 by dynamic difference scanning calorimetry (DSC).Glass transition
Temperature TgNumerical value based on the glass transition temperature T according to DIN 53765:1994-03g, except as may be expressly otherwise indicated.
The multiple layer combination part of the invention with high internal resistance Buddhist nun for manufacturing the diaphragm of electroacoustic transducer is shown in Figure 1.This combination
Part includes the first outer layer 1, the first damping layer 2, interlayer 3, the second damping layer 4 and the second outer layer 5.
As outer layer 1 and 5, such as its main component (more particularly at least 50 weight %, preferably entirely) can be used to select
From following polymer film: polyethylene terephthalate (PET), polycarbonate (PC), polybutylene terephthalate (PBT)
(PBT), polyethylene naphthalate (PEN), polyether-ether-ketone (PEEK), polyether-ketone (PEK), poly(aryl ether ketone) (PAEK), polyethers
Acid imide (PEI), polyarylate (PAR), polyphenylene sulfide (PPS), polyphenylsulfone (PPSU), polysulfones (PSU), gathers polyimides (PI)
Ether sulfone (PES), polyurethane (PU), liquid crystal polymer (LCP).Metal foil such as aluminium foil can also be used.Can be used as flat film or
Film is manufactured with biaxial orientation.Polyether-ether-ketone outer layer is revealed as particularly preferred.
Be suitable as interlayer 3 in principle is also that its main component (especially at least 50 weight %, preferably entirely) is selected from
Following film: polyethylene terephthalate (PET), polybutylene terephthalate (PBT) (PBT), gathers polycarbonate (PC)
(ethylene naphthalate) (PEN), polyether-ether-ketone (PEEK), polyether-ketone (PEK), poly(aryl ether ketone) (PAEK), polyetherimide
(PEI), polyimides (PI), polyarylate (PAR), polyphenylene sulfide (PPS), polyphenylsulfone (PPSU), polysulfones (PSU), polyether sulfone
(PES), polyurethane (PU), liquid crystal polymer (LCP).
Because vibration causes the less mechanical load of interlayer compared with outer layer, and because the softening of interlayer is even when heating
It can be advantage, so in addition interlayer can be used the film nor so stable material of temperature.For the material stated
The film of the substitution of material, interlayer can be made of its main component plastics chosen from the followings: polyethylene [PE, LDPE (low density PE),
MDPE (middle density PE), HDPE (high density), LLDPE (linea low density PE), VLDPE (extra-low density PE)], EVA (ethylene-
Vinyl acetate), polypropylene (PP, PP homopolymer, PP random copolymer, PP impact copolymer), polystyrene [PS, HI-PS
(high-impact PS)], EPDM (ethylene-propylene-diene terpolymer), styrene block copolymer [SBS (styrene-fourth two
Alkene-styrene), SEBS (styrene-ethylene-butylene-styrene), SIS (styrene-isoprene-phenylethene), SEPS (benzene
Ethylene-ethylene-propylene-styrene)].Non-woven fabric and weaving fabric, paper or foams can also be used.
Outer layer can be made of identical material or different materials, and the material of interlayer in principle can be independently of outer layer
Material and select.However, interlayer can also be by forming with one of two outer layers or material identical with two outer layers.Interlayer 3, first
Outer layer 1 and the second outer layer 5 are alternatively all made of different materials.
The thickness of two outer layers and interlayer be it is independent of each other and be located at 1-100 μm, preferably 1-50 μm, more preferably
In the range of 2-30 μm.Thickness gauge (DIN53370:2006-11, method F can be used in the thickness of layer；Standard conditions) measurement.For
This, for film, using the dish type meter (circle) of the diameter with 10mm, using the application weight of 4N.
What it is as damping layer 2 and 4 is adhesive, preferably pressure-sensitive adhesive (PSA).These can be resin modified propylene
Acid esters PSA, acrylate dispersoid, synthetic rubber PSA, organosilicon PSA, PU PSA etc..
The thickness of damping layer 2 and 4 is 1-100 μm, preferably 2-50 μm, more preferably 4-30 μm independently of one another.Two
The thickness of damping layer is typically greater than the thickness of outer layer and the thickness greater than interlayer.
Pass through the glass transition of the layer 2 and 4 of two adhesive of DSC (method as illustrated herein) measurement
Temperature is at a distance of at least 10K, preferably at least 15K, more preferably at least 20K.
Sub-assembly can have asymmetric geometry in the sense that following: the thickness of two outer layers and/or two
The thickness of damping layer be selected as it is different, a preferably at least outer layer and/or at least one damping layer selection referring to above
Within bright corresponding thickness range, and most preferably two outer layers and/or two damping layers are selected in the phase indicated above
Within the thickness range answered.
No matter the heterogeneity of damping layer, sub-assembly preferably has symmetrical geometry in the sense that following:
At least described two outer layers possess identical thickness and/or at least described two damping layers possess identical thickness；These thickness
It is chosen more particularly within the above corresponding thickness range indicated.
In the case where a particularly preferred embodiment, described two outer layers and the interlayer respectively possess identical
Thickness, and also (it can correspond to but not necessarily have to correspond to outer layer and interlayer to two damping layers for thickness having the same
Thickness).It is highly preferred that thickness is selected from the range of details described above in each situation.
In a further preferred embodiment, outer layer thickness having the same, and damping layer also all have it is identical
Thickness, wherein interlayer is thinner than each outer layer.
Embodiment
The interior damping η of multiple layer combination part is according to the vibration-damping property for being used to measure material according to ASTM E756
Oberst beam measurements determination, specific as follows:
The band of 10mm wide and the laminated body of 50mm long are clamped at one end in this way, so that allowing it with 15mm's
Vibrate to length free suspension.The band is clamped on the side for being parallel to 10mm long, and wherein the band is hanged vertically downward with the side of 15mm long
It hangs down.Then, band excitation is made to enter vibration with subsequent loudspeaker sound wave by being placed exactly in this.The frequency of sound wave is from 2Hz
Continue to increase to 2000Hz, and with the offset of the band of laser recording free vibration during the process.It adjusts for this purpose
Laser takes so that its beam is orthogonally away from the lower edge 3mm of the band and is medially radiated at this.The offset of band in vibration
It is measured by laser according to known laser triangulation principle.It (excites instead of acoustics, can also purely mechanically be induced by engine
Band vibration；The principle of method keeps identical.)
In order to evaluate, by by measure with offset harmony swaging at quotient map to frequency.Laser is used in offset as described above
Measurement, while the acoustic pressure and frequency of the sound wave generated with microphone record by loudspeaker.In obtained figure, each band is for institute
It is to reach maximum value at specific and being characterized property frequency for the specific multiple layer combination part of research.Obtain the frequency of the maximum value
Rate is referred to as resonant frequency f0.It is same specific for multiple layer combination part and it is characteristic be the figure around the maximum value mistake
Journey (curve).The interior damping of multiple layer combination part can be obtained by the figure process: the offset of band before and after resonant frequency
It is increased sharply and declines and correspond to low interior damping, and in f0The flat map contour located around maximum value corresponds to high internal resistance
Buddhist nun.By -4dB the bandwidth deltaf of figure4dB, in other words by the peak 4dB under the maximum value of figure width calculate internal resistance Buddhist nun η.In terms of Hz
The width at peak at this point is divided by resonant frequency f0, obtain interior damping η:
η=Δ4dB/f0
Respectively display has in f Fig. 2 and 30The exemplary curve of the maximum value at place is to be illustrated evaluation.In right-hand side
Figure in the process of relatively flat around maximum value show the higher interior damping of discussed sub-assembly.
It is all measurement 23 DEG C at a temperature of carry out；Sample band is stored and adjusted 24 hours at 23 DEG C before measuring.
Result is related to being averaged from five measurements to each sample in every case.
The embodiment of the present invention 1
By the PEEK film of 8 μ m-thicks, (Aptiv 1000-008G derived from Victrex), has by DSC (DIN three layers of sub-assembly
53765) T measuredgThe PEEK film manufacture of the layer and 8 μ m-thicks of the acrylate resin of=- 44 DEG C of 30 μ m-thicks.Internal resistance
The numerical value of Buddhist nun is η=0.12.
The embodiment of the present invention 2
Three layers of sub-assembly by 8 μ m-thicks PEEK film, there is the T that is measured by DSC (DIN 53765)g=-23 DEG C of 30 μ m-thicks
Acrylate resin layer and 8 μ m-thicks PEEK film manufacture.The numerical value of interior damping is η=0.11.
Comparative example 1
With 15 μm of the acrylate resin (T as described in for the embodiment of the present invention 1g=-44 DEG C) 8 μ m-thicks of coating
PEEK film.With 15 μm of the acrylate resin (T as described in for the embodiment of the present invention 2g=-23 DEG C) 8 μm of coating
The 2nd thick PEEK film.Adhesive selected to use is so as to unmixing each other.By applying pressure for two corresponding adhesive
It is stacked on one another at room temperature by adhesive side with the sub-assembly of PEEK film, it is ensured that no air bubble is included in two adhesive
Layer between.The numerical value of interior damping is η=0.13.
Comparative example 2
With 15 μm of the acrylate resin (T as described in for the embodiment of the present invention 1g=-44 DEG C) 8 μ m-thicks of coating
PEEK film.Also with 15 μm of the acrylate resin (T as described in for the embodiment of the present invention 1g=-44 DEG C) 8 μ of coating
2nd PEEK film of m thickness.Each of the sub-assembly of the PEEK film of two adhesive coateds is laminated to 2 μ m-thicks by adhesive side
PET film two sides each, to obtain 8 μm of PEEK films, 15 μm of acrylate resin (Tg=-44 DEG C；Referring to
The embodiment of the present invention 1), 2 μm of PET films, 15 μm of acrylate resin (Tg=-44 DEG C；Referring to the embodiment of the present invention 1) and
Five layers of sub-assembly of 8 μm of PEEK films.The numerical value of interior damping is η=0.08.
The embodiment of the present invention 3
With 15 μm of the acrylate resin (T as described in for the embodiment of the present invention 1g=-44 DEG C) 8 μ m-thicks of coating
PEEK film.With 15 μm of the acrylate resin (T as described in for the embodiment of the present invention 2g=-23 DEG C) 8 μm of coating
The 2nd thick PEEK film.Each by the sub-assembly of the PEEK film of two adhesive coateds is laminated to 2 μm by adhesive side
Each of the two sides of thick PET film, to obtain 8 μm of PEEK films, 15 μm of acrylate resin (Tg=-44 DEG C；Ginseng
See the embodiment of the present invention 1), 2 μm of PET films, 15 μm of acrylate resin (Tg=-23 DEG C；Referring to the embodiment of the present invention 2),
With five layers of sub-assembly of 8 μm of PEEK films.The numerical value of interior damping is η=0.19.
As a result it collects:
It is apparent as follows according to the present invention: in causing in the layer for the adhesive that film interlayer is introduced in three layers of sub-assembly
The deterioration (comparative example 2) of damping.Change the layer of the adhesive in three layers of sub-assembly with formed a half thickness, with different glass
The bilayer of the unmixing gluing oxidant layer of two of glass transition temperature only results in the small improvement (comparative example 1) of damping aspect.Only
Have when two kinds of measures all carry out, unpredictably, significantly improves (embodiment of the present invention 3) there are the interior damping of sub-assembly.
Claims (28)
1. the multiple layer combination part for the diaphragm for manufacturing electroacoustic transducer includes the first outer layer, the with sequence described below
One damping layer, interlayer, the second damping layer and the second outer layer, are characterized in that
First and second damping layer is by its glass transition temperature TgDiffer the adhesive composition of at least 10K, TgIt is by dynamic
The measurement of state Differential Scanning Calorimetry.
2. it is as described in claim 1 for manufacturing the multiple layer combination part of the diaphragm of electroacoustic transducer, it is characterized in that
The glass transition temperature T of the adhesive of first and second damping layergDiffer at least 15K.
3. it is as described in claim 1 for manufacturing the multiple layer combination part of the diaphragm of electroacoustic transducer, it is characterized in that
The glass transition temperature T of the adhesive of first and second damping layergDiffer at least 20K.
4. being characterized in that as preceding claims are described in any item for manufacturing the multiple layer combination part of the diaphragm of electroacoustic transducer
First and/or second outer layer is made of its main component material chosen from the followings: polyethylene terephthalate
(PET), polycarbonate (PC), polybutylene terephthalate (PBT) (PBT), polyethylene naphthalate (PEN), polyether-ether-ketone
(PEEK), polyether-ketone (PEK), polyetherimide (PEI), polyimides (PI), polyarylate (PAR), polyphenylene sulfide (PPS), poly-
Benzene sulfone (PPSU), polysulfones (PSU), polyether sulfone (PES), polyurethane (PU), liquid crystal polymer (LCP).
5. it is as described in any one of claims 1-3 for manufacturing the multiple layer combination part of the diaphragm of electroacoustic transducer, it is characterized in that
First and/or second outer layer with a thickness of 1-100 μm.
6. it is as described in any one of claims 1-3 for manufacturing the multiple layer combination part of the diaphragm of electroacoustic transducer, it is characterized in that
First and/or second outer layer with a thickness of 1-50 μm.
7. it is as described in any one of claims 1-3 for manufacturing the multiple layer combination part of the diaphragm of electroacoustic transducer, it is characterized in that
First and/or second outer layer with a thickness of 2-30 μm.
8. it is as described in any one of claims 1-3 for manufacturing the multiple layer combination part of the diaphragm of electroacoustic transducer, it is characterized in that
The interlayer is made of its main component material chosen from the followings:
Polyethylene terephthalate (PET), polycarbonate (PC), polybutylene terephthalate (PBT) (PBT), poly- naphthalene diformazan
Sour glycol ester (PEN), polyether-ether-ketone (PEEK), polyether-ketone (PEK), polyetherimide (PEI), polyimides (PI), poly- virtue
Ester (PAR), polyphenylene sulfide (PPS), polyphenylsulfone (PPSU), polysulfones (PSU), polyether sulfone (PES), polyurethane (PU), polymerizable mesogenic
Object (LCP).
9. it is as described in any one of claims 1-3 for manufacturing the multiple layer combination part of the diaphragm of electroacoustic transducer, it is characterized in that
The interlayer is made of its main component material chosen from the followings:
Polyethylene (PE), ethane-acetic acid ethyenyl ester (EVA), polypropylene (PP), polystyrene (PS), Ethylene-Propylene-Diene three
Membered copolymer (EPDM), styrene block copolymer.
10. it is as claimed in claim 9 for manufacturing the multiple layer combination part of the diaphragm of electroacoustic transducer, it is characterized in that
Polyethylene (PE) is low density PE (LDPE), middle density PE (MDPE), high density PE (HDPE), linea low density PE
(LLDPE), extra-low density PE (VLDPE).
11. it is as claimed in claim 9 for manufacturing the multiple layer combination part of the diaphragm of electroacoustic transducer, it is characterized in that
Polypropylene (PP) is PP homopolymer, PP random copolymer, PP impact copolymer.
12. it is as claimed in claim 9 for manufacturing the multiple layer combination part of the diaphragm of electroacoustic transducer, it is characterized in that
Polystyrene (PS) is high-impact PS (HI-PS).
13. it is as claimed in claim 9 for manufacturing the multiple layer combination part of the diaphragm of electroacoustic transducer, it is characterized in that
Styrene block copolymer is s-B-S (SBS), styrene-ethylene-butylene-styrene
(SEBS), styrene-isoprene-phenylethene (SIS), styrene ethylene-propylene-styrene (SEPS).
14. it is as described in any one of claims 1-3 for manufacturing the multiple layer combination part of the diaphragm of electroacoustic transducer, it is characterized in that
The interlayer by non-woven fabric, weaving fabric, paper or foams or the layer of two or more previous materials multilayer group
Component composition.
15. it is as described in any one of claims 1-3 for manufacturing the multiple layer combination part of the diaphragm of electroacoustic transducer, it is characterized in that
The interlayer with a thickness of 1-100 μm.
16. it is as described in any one of claims 1-3 for manufacturing the multiple layer combination part of the diaphragm of electroacoustic transducer, it is characterized in that
The interlayer with a thickness of 1-50 μm.
17. it is as described in any one of claims 1-3 for manufacturing the multiple layer combination part of the diaphragm of electroacoustic transducer, it is characterized in that
The interlayer with a thickness of 2-30 μm.
18. it is as described in any one of claims 1-3 for manufacturing the multiple layer combination part of the diaphragm of electroacoustic transducer, it is characterized in that
One or two damping layer is pressure-sensitive adhesive.
19. it is as described in any one of claims 1-3 for manufacturing the multiple layer combination part of the diaphragm of electroacoustic transducer, it is characterized in that
One or two damping layer is hot melt adhesive.
20. it is as described in any one of claims 1-3 for manufacturing the multiple layer combination part of the diaphragm of electroacoustic transducer, it is characterized in that
One or two damping layer with a thickness of 1-100 μm.
21. it is as described in any one of claims 1-3 for manufacturing the multiple layer combination part of the diaphragm of electroacoustic transducer, it is characterized in that
One or two damping layer with a thickness of 2-50 μm.
22. it is as described in any one of claims 1-3 for manufacturing the multiple layer combination part of the diaphragm of electroacoustic transducer, it is characterized in that
One or two damping layer with a thickness of 3-30 μm.
23. it is as described in any one of claims 1-3 for manufacturing the multiple layer combination part of the diaphragm of electroacoustic transducer, it is characterized in that
First and/or second outer layer is polyether-ether-ketone outer layer.
24. it is as described in any one of claims 1-3 for manufacturing the multiple layer combination part of the diaphragm of electroacoustic transducer, it is characterized in that
Sub-assembly has symmetrical geometry in the sense that following: at least described two outer layers possess identical thickness
And/or at least described two damping layers possess identical thickness.
25. it is as described in any one of claims 1-3 for manufacturing the multiple layer combination part of the diaphragm of electroacoustic transducer, it is characterized in that
Described two outer layers and the interlayer respectively possess identical thickness, and two damping layers also thickness having the same.
26. it is as described in any one of claims 1-3 for manufacturing the multiple layer combination part of the diaphragm of electroacoustic transducer, it is characterized in that
Outer layer thickness having the same, and damping layer also all has identical thickness, and wherein interlayer is thinner than each outer layer.
27. if the described in any item multiple layer combination parts for manufacturing the diaphragm of electroacoustic transducer of preceding claims are for manufacturing
The purposes of the diaphragm of electroacoustic transducer.
28. diaphragm, can by as the described in any item multiple layer combination parts of claim 1-26 by hot forming, punching, deep-draw or
Other forming techniques obtain.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102013225665.5A DE102013225665A1 (en) | 2013-12-11 | 2013-12-11 | Multi-layer laminate with high internal damping |
| DE102013225665.5 | 2013-12-11 | ||
| PCT/EP2014/075765 WO2015086330A1 (en) | 2013-12-11 | 2014-11-27 | Multi-layer laminate with high internal damping |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105814910A CN105814910A (en) | 2016-07-27 |
| CN105814910B true CN105814910B (en) | 2019-04-12 |
Family
ID=52002925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480067630.9A Active CN105814910B (en) | 2013-12-11 | 2014-11-27 | Multilayer stack with high internal damping |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US9693143B2 (en) |
| EP (1) | EP3081007B1 (en) |
| JP (1) | JP2017500806A (en) |
| KR (1) | KR102169488B1 (en) |
| CN (1) | CN105814910B (en) |
| DE (1) | DE102013225665A1 (en) |
| TW (1) | TWI678933B (en) |
| WO (1) | WO2015086330A1 (en) |
Families Citing this family (16)
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|---|---|---|---|---|
| WO2017178490A1 (en) * | 2016-04-11 | 2017-10-19 | 4A Manufacturing Gmbh | Membrane plate structure for generating sound waves |
| CN105933831B (en) * | 2016-04-22 | 2020-05-12 | 歌尔股份有限公司 | Vibrating diaphragm and miniature sounder provided with same |
| GB2549955A (en) * | 2016-05-03 | 2017-11-08 | 4A Mfg Gmbh | Membrane plate structure for generating sound waves |
| US10028060B2 (en) * | 2016-08-22 | 2018-07-17 | 4A Manufacturing Gmbh | Temperature stable membrane plate structure for a loudspeaker |
| US10034093B2 (en) * | 2016-08-22 | 2018-07-24 | 4A Manufacturing Gmbh | Temperature stable membrane plate structure for a loudspeaker |
| MX2019003145A (en) | 2016-09-20 | 2019-11-11 | Avery Dennison Corp | Multilayer tape. |
| US9759286B1 (en) * | 2016-11-30 | 2017-09-12 | Newtonoid Technologies, L.L.C. | Damping adhesive |
| DE102017202621A1 (en) * | 2017-02-17 | 2018-08-23 | Tesa Se | Vibration-damping silicone pressure-sensitive adhesive |
| WO2019071379A1 (en) * | 2017-10-09 | 2019-04-18 | 3M Innovative Properties Company | Damping adhesive layers for microspeaker diaphragms |
| HUE068720T2 (en) * | 2017-12-14 | 2025-01-28 | Avery Dennison Corp | Pressure sensitive adhesive with broad damping temperature and frequency range |
| CN112135730B (en) * | 2018-03-19 | 2023-09-29 | 艾利丹尼森公司 | Multilayer constraining layer damping |
| MX2020012326A (en) | 2018-05-17 | 2021-06-15 | Avery Dennison Corp | Partial coverage multilayer damping laminate. |
| EP3887467A2 (en) * | 2018-11-27 | 2021-10-06 | Avery Dennison Corporation | Multilayer tape constructions for low-temperature vibration damping with tunable adhesion |
| CN110049411B (en) * | 2018-12-29 | 2021-01-15 | 瑞声科技(新加坡)有限公司 | Vibrating diaphragm and sound production device |
| CN112203193B (en) * | 2020-10-15 | 2024-09-03 | 精拓丽音科技（北京）有限公司 | Membrane material, vibrating diaphragm and manufacturing method of membrane material |
| KR20240119708A (en) * | 2023-01-30 | 2024-08-06 | 엘지디스플레이 주식회사 | Apparatus |
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2013
- 2013-12-11 DE DE102013225665.5A patent/DE102013225665A1/en not_active Withdrawn
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2014
- 2014-11-27 KR KR1020167018527A patent/KR102169488B1/en not_active Expired - Fee Related
- 2014-11-27 US US15/103,155 patent/US9693143B2/en not_active Expired - Fee Related
- 2014-11-27 CN CN201480067630.9A patent/CN105814910B/en active Active
- 2014-11-27 EP EP14805845.6A patent/EP3081007B1/en not_active Not-in-force
- 2014-11-27 WO PCT/EP2014/075765 patent/WO2015086330A1/en active Application Filing
- 2014-11-27 JP JP2016538796A patent/JP2017500806A/en active Pending
- 2014-12-02 TW TW103141707A patent/TWI678933B/en not_active IP Right Cessation
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| CN1771756A (en) * | 2003-04-09 | 2006-05-10 | 法国劲浪公司 | Multi-layered membranes consisting of a plurality of materials, for the loudspeaker of a high fidelity loudspeaker cabinet |
| CN102271905A (en) * | 2009-01-06 | 2011-12-07 | 塞特克技术公司 | Structural composite material with improved acoustic and vibrational damping properties |
| CN102065355A (en) * | 2010-05-04 | 2011-05-18 | 瑞声声学科技(深圳)有限公司 | Vibrating membrane and miniature acoustic generator comprising same |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI678933B (en) | 2019-12-01 |
| KR20160097317A (en) | 2016-08-17 |
| DE102013225665A1 (en) | 2015-06-18 |
| EP3081007A1 (en) | 2016-10-19 |
| JP2017500806A (en) | 2017-01-05 |
| US9693143B2 (en) | 2017-06-27 |
| TW201534143A (en) | 2015-09-01 |
| CN105814910A (en) | 2016-07-27 |
| EP3081007B1 (en) | 2019-06-19 |
| KR102169488B1 (en) | 2020-10-23 |
| WO2015086330A1 (en) | 2015-06-18 |
| US20160309260A1 (en) | 2016-10-20 |
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